Drinking tumbler



FIG. 1 shows a perspective view of the drinking tumbler.

FIG. 2 shows a side elevation view.

FIG. 3 shows a top plan view.

FIG. 4 shows a bottom plan view; and,

FIG. 5 shows a mid-line sectional view taken in the direction of line 5-5 of the drinking tumbler. 

CLAIM We claim the ornamental design for a drinking tumbler, as shown and described. 